High performance cooling fan, 140x140x25 mm, 12V, 3-pin / 4-pin , max. 1500 RPM, max. 29 dB(A) High Quality Fan Blade, designed with 7 blades to provide high airflow (49.8CFM), good cooling capacity. Low-Noise Operation A custom fan blade and hydraulic bearing allows for low-noise operation without sacrificing performance The Best of Airflow and Static Pressure Offers the ideal combination of high airflow and strong static pressure allowing for use as a case fan Three 140MM fans provide excellent heat dissipation, add fun and bring you better gaming experience.